John Csontosi

* Prešov, 26 October 1846 – † Budapest, 25 October 1918 / librarian, member of the Hungarian Academy of Sciences ; ; Between 1863 and 1867 he studied theology in Esztergom and Nagyszombat, and was ordained a priest in 1869. Between 1869 and 1871 he was a chaplain in Ipolynyék and then in Nagyoroszi. In 1872 he left the Catholic Church and converted to the Lutheran faith. Between 1874 and 1893 he worked at the National Széchényi Library in Budapest, from 1881 as the head of the manuscript collection. He also became a victim of the unfounded attacks launched against his patron, Ferenc Pulszky, after disciplinary proceedings were initiated against him for alleged abuses and he had to leave the library. In 1913, his innocence was proven, but he was not rehabilitated. As a researcher, he primarily dealt with the history of writing (paleography) and manuscripts, and the discovery and recovery of 52 corvinas were also his merits. Between 1879 and 1892, he was the editor of the Hungarian Book Review. The Hungarian Academy of Sciences elected him a corresponding member in 1883. ; ; His main works: ; Bibliographical description of the Corvin codices returned from Constantinople, 1877, ; Unknown Hungarian codex in the library of Prince Mór Lobkowitz in Raudnitz, 1879, ; Hungarian book copyists and type painters in the 14th–15th centuries, 1879, ; Latin manuscripts of the Budapest National Book Exhibition, 1882, ; Portraits of King Matthias and Queen Beatrix in the Corvin Codices (also in German), 1888; History of Two Corvin Codices from Modena, 1892.